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Vision transformers in vision-language models typically use the same amount of compute for every image, regardless of whether it is simple or complex. We propose ICAR (Image Complexity-Aware Retrieval), an adaptive computation approach that…

信息检索 · 计算机科学 2026-01-16 Mikel Williams-Lekuona , Georgina Cosma

Suppressing the interference of atmospheric turbulence and obtaining observation data with a high spatial resolution is an issue to be solved urgently for ground observations. One way to solve this problem is to perform a statistical…

天体物理仪器与方法 · 物理学 2022-07-04 Hui Liu , Zhenyu Jin , Yongyuan Xiang , Kaifan Ji

Composed image retrieval (CIR) is a vision language task that retrieves a target image using a reference image and modification text, enabling intuitive specification of desired changes. While effectively fusing visual and textual…

计算机视觉与模式识别 · 计算机科学 2025-07-18 Jeong-Woo Park , Young-Eun Kim , Seong-Whan Lee

Coherent diffractive imaging (CDI), using both X-rays and electrons, has made extremely rapid progress over the past two decades. The associated reconstruction algorithms are typically iterative, and seeded with a crude first estimate. A…

图像与视频处理 · 电气工程与系统科学 2019-06-25 Konstantin M. Pavlov , Kaye S. Morgan , Vasily I. Punegov , David M. Paganin

Modern tomography involves gathering projection data from multiple directions and feeding them into a software algorithm for tomographic reconstruction. We focus our study on image reconstruction from Radon data in the setting of…

数值分析 · 数学 2014-12-19 Maria Angela Narduzzo

A major challenge in single particle reconstruction methods using cryo-electron microscopy is to attain a resolution sufficient to interpret fine details in three-dimensional (3D) macromolecular structures. Obtaining high resolution 3D…

数值分析 · 数学 2013-07-23 Lanhui Wang , Yoel Shkolnisky , Amit Singer

Computed Tomography (CT) technology reduces radiation haz-ards to the human body through sparse sampling, but fewer sampling angles pose challenges for image reconstruction. Score-based generative models are widely used in sparse-view CT…

图像与视频处理 · 电气工程与系统科学 2025-12-22 Junyan Zhang , Mengxiao Geng , Pinhuang Tan , Yi Liu , Zhili Liu , Bin Huang , Qiegen Liu

Computed tomography (CT) images are often severely corrupted by artifacts in the presence of metals. Existing supervised metal artifact reduction (MAR) approaches suffer from performance instability on known data due to their reliance on…

计算机视觉与模式识别 · 计算机科学 2025-12-11 Jie Wen , Chenhe Du , Xiao Wang , Yuyao Zhang

Iterative method selection is crucial for solving sparse linear systems because these methods inherently lack robustness. Though image-based selection approaches have shown promise, their feature extraction techniques might encode distinct…

计算机视觉与模式识别 · 计算机科学 2025-10-02 Kaiqi Zhang , Mingguan Yang , Dali Chang , Chun Chen , Yuxiang Zhang , Kexun He , Jing Zhao

One-sided ultrasonic non-destructive evaluation (UNDE) is extensively used to characterize structures that need to be inspected and maintained from defects and flaws that could affect the performance of power plants, such as nuclear power…

图像与视频处理 · 电气工程与系统科学 2018-08-13 Hani Almansouri , Singanallur Venkatakrishnan , Charles Bouman , Hector Santos-Villalobos

Reconstruction of CT images from a limited set of projections through an object is important in several applications ranging from medical imaging to industrial settings. As the number of available projections decreases, traditional…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Anish Lahiri , Marc Klasky , Jeffrey A. Fessler , Saiprasad Ravishankar

Accelerating the data acquisition of dynamic magnetic resonance imaging (MRI) leads to a challenging ill-posed inverse problem, which has received great interest from both the signal processing and machine learning community over the last…

计算机视觉与模式识别 · 计算机科学 2018-10-16 Chen Qin , Jo Schlemper , Jose Caballero , Anthony Price , Joseph V. Hajnal , Daniel Rueckert

Multi-source stationary computed tomography (CT) has recently attracted attention for its ability to achieve rapid image reconstruction, making it suitable for time-sensitive clinical and industrial applications. However, practical systems…

计算机视觉与模式识别 · 计算机科学 2025-11-19 Jiancheng Fang , Shaoyu Wang , Junlin Wang , Weiwen Wu , Yikun Zhang , Qiegen Liu

3D volumetric reconstruction from incomplete or noisy measurements is a fundamental problem in medical imaging and computational tomography. Deep image prior (DIP)-based methods have recently shown strong capability for solving inverse…

计算工程、金融与科学 · 计算机科学 2026-05-29 Haijie Yuan , Chaoyan Huang , Srijita Bandopadhyay , Liyue Shen , Saiprasad Ravishankar

Three-dimensional x-ray CT image reconstruction in baggage scanning in security applications is an important research field. The variety of materials to be reconstructed is broader than medical x-ray imaging. Presence of high attenuating…

计算机视觉与模式识别 · 计算机科学 2015-08-20 S. Degirmenci , Joseph A. O'Sullivan , David G. Politte

Purpose: Optoacoustic tomography (OAT) is inherently a three-dimensional (3D) inverse problem. However, most studies of OAT image reconstruction still employ two-dimensional (2D) imaging models. One important reason is because 3D image…

Image fusion is a fundamental and important task in computer vision, aiming to combine complementary information from different modalities to fuse images. In recent years, diffusion models have made significant developments in the field of…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Zirui Wang , Jiayi Zhang , Tianwei Guan , Yuhan Zhou , Xingyuan Li , Minjing Dong , Jinyuan Liu

By the ALARA (As Low As Reasonably Achievable) principle, ultra-low-dose CT reconstruction is a holy grail to minimize cancer risks and genetic damages, especially for children. With the development of medical CT technologies, the iterative…

图像与视频处理 · 电气工程与系统科学 2021-06-21 Weiwen Wu , Chuang Niu , Shadi Ebrahimian , Hengyong Yu , Mannu Kalra , Ge Wang

Purpose: To develop a general phase regularized image reconstruction method, with applications to partial Fourier imaging, water-fat imaging and flow imaging. Theory and Methods: The problem of enforcing phase constraints in reconstruction…

计算机视觉与模式识别 · 计算机科学 2017-09-26 Frank Ong , Joseph Cheng , Michael Lustig

The positive outcome of a trauma intervention depends on an intraoperative evaluation of inserted metallic implants. Due to occurring metal artifacts, the quality of this evaluation heavily depends on the performance of so-called Metal…

图像与视频处理 · 电气工程与系统科学 2021-12-07 Tristan M. Gottschalk , Andreas Maier , Florian Kordon , Björn W. Kreher